Wrench



0. DUDA.

WRENCH.

APPLICATION FILED DEC. 23. 1920.

1,884,800. 1 Patented July 19,1921.

Qnvenlor:

I Oswald Bud h q %4MJ.,@W aw wrm Harmye oswALn none, or HOUSTON,

PATENT OFFICE.

TEXAS, ASSIGNOB TO ROLLER IBIT COMPANY, A CORPORATION OF TEXAS.

WRENCH.

T 0 all whom it may concern:

Be it known that I,' OSWALD DUDA, a citizen of the United States, andresident of Houston, Texas, have invented certain new and usefulImprovements in Wrenches, of which the following is a specification.

The invention consists in the features and combination and arrangementof parts hereinafter described and particularly pointed out in theappended claims.

In the accompanying drawings' Figure 1 is an elevation of the wrenchwith a portion in section,.the handle being shown in two positions, oneindicated by dotted lines and the other by full lines.

Fig. 2 is an edge view of the wrench. The wrench comprises a suitableform of head and as one form with which my invenobtained by pulling onthe handle of an tion may be used I show a formation adapted to receivea hexagonal nut. This head '1 is provided with a forked portion 2 Withinwhich lies the enlarged end 3 of a handle 4. The handle is pivoted at 5to one side of the center line of the head and has a lateral extension 6which works between the sides of the forked portion of the main head andis provided with a pin 7 acting as a limiting stop by coming in contactwith the wall of the slots 8'formed in the sides of the forked portion.Theend face of the enlarged portion of the handle is formed in twoplanes 9 and 10 lying at an angle to each other and a spring 11 isinterposed between the .end face 10 and the bottom of the space withinthe forked portion of the head. This spring normally presses the handleinto the position shown in full lines in Fig. 1 and serves to hold themain head and the handle against moving loosely in respect to eachother, so that the wrench can be applied in close quarters to a nut orother part with the same facility as though the head portion of thewrench were rigidly fixed to the handle.

One object of the invention is to provide a wrench-for tightenin anythreaded joint beyond the degree of tightness that can be ordinarywrench in the usual manner. In the use of the present wrench it isapplied to the nut or other part to beturned and a pull on'the handlewill bring it into the position relative to the head .or jaws asindicated in dotted lines in Fig. 1. The joint having been tightened tothe limit that may Specification of Letters Patent.

Application filed December 23, 1920. Serial No. 432,641.

wrench handle will be given a movement such as that used in operating aratchet.

As above indicated, the spring serves to hold the handle and the jaw. orhead is substantially fixed relation when the wrench is being placed inposition, and thus by'the structure described we get substantially theeffect of ajrigid wrench when placing it in position and the hammer blowis secured when the wrench is operated.

It will be understood that the above description and the accompanyingdrawing are to be regarded in an illustrative sense and not as limitingthe invention to the form of part shown. The head of the wrench may beso shaped as to take articles other than of hexagonal form.

Neither do I limit myself to the jaw construction of the portion of thewrench, as shown,'which grips a part to be turned.

I claim as myinvention:

1. A wrench comprising a head having a pair of rigid jaws to engage theobject, a handle pivoted to the head to one side of the center linebetween the jaws and having a lateral extension from said pivot reachingacross'the center line and adapted, when the handle is turned on itspivot. to rock'to and from the head, said extension contacting with thehead after the handle has moved freely through a certain arc in thedirection to turn the object.

2. A wrench comprising a head having rigid jaws to engage the object, ahandle ivoted to the head to one side of the center. ine ofthe jaws, andhaving an extension lying on the same side of the pivot with the centerline, said extension contacting with the head'after a certain freemovement of the handle has taken place in the lirection to turn theobject, substantially as described. r

3. A wrench comprising a head having described.

4. A wrench comprising a head portion having jaws and a forked portion,a handle having an enlarged end pivoted within the forked portion to oneside of the center line of the wrench, and a spring interposed betweenthe enlarged end of the handle and the head portion of the wrench,substantially as described.

5. In combination in a wrench, a head portion, a handle portion pivotedto one side of the center line of the head portion and having a lateralextension, and a stop pin carried by-the handle, the head pQr-x tionhaving a slot to receive the stop pm, substantially as described.

In testimony whereof I afiix my signature.

OSWALD DUD-A.

